Boone County acting sheriff Maj. Mike Nielsen said in a brief written release Monday afternoon that an audit by the Indiana State Board of Accounts of funds controlled by former Sheriff Ken Campbell raised no red flags.

"It was a positive meeting and there are no indications of any financial misdoings," Nielsen said in the statement released after he had an "exit interview" on the results.

Nielsen had requested the audit June 20 after Campbell resigned in the midst of an investigation into his four-year involvement with an alleged prostitute. The investigation is being conducted by the Boone County-Hamilton County Drug Task Force and the FBI.

The sheriff's office accounts Campbell controlled included the sheriff's commissary, inmate commissary and cash book. He said he requested the financial review for 2010 to 2014 to "make sure there were no financial misdoings."

The State Board of Accounts' official report will not be publicly available for another four to five weeks, the sheriff's department release said.

Nielsen also has launched an internal investigation of the Boone County Sheriff's Office to determine whether there was any involvement in Campbell's actions.

"If anything criminal is found through this investigation, a (third-party) law enforcement agency will investigate further," Nielsen said in the statement. "If a violation of Standard Operating Guidelines is found, we will take immediate, internal, disciplinary action."

Capt. Mike Beard and Lt. Deb Martin are leading the internal investigation.

Nielsen said he wants the state audit and the internal investigation to position the sheriff's office to leave the past behind.

"It's time to move forward, but before we can do that, we must make sure there are no residual effects," Nielse said. "We need to focus on the future, and not the past."